Commitments (Details Narrative) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Commitments and Contingencies Disclosure [Abstract]
Rent Expense	$ 12,000	$ 11,200	$ 10,700
Royalty expense, percentage of net sales	7.20%	6.70%	7.30%
Royalty Expense	$ 48,900	$ 39,600	$ 37,800